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Título

Belite cements obtained from ceramic wastes and the mineral pair CaF2/CaSO4

AutorGarcía-Díaz, Irene; Palomo, J. G.; Puertas, F.
Palabras claveCeramic wastes
Alternative raw materials
Belite cements
Mineralisers
Fluxes
Fecha de publicación2011
EditorElsevier
CitaciónCement and Concrete Composites; 33 (10) : 1063-1070 (2011)
ResumenThe cement industry is seeking alternative approaches to reduce the high energy and environmental costs of Portland cement manufacture. One such alternative is belite cement. In the present study clinkers with high (36–60%) belite contents were obtained at 1350 °C from raw mixes consisting of ceramic waste and the fluxing/mineralised pair CaF2/CaSO4. The factors found to affect the mineralogical composition and the clinker phase polymorphs obtained were the lime saturation factor (LSF), the presence of ceramic waste and the addition of CaF2 and CaSO4. The reactivity of these belite clinkers with water was analysed with isothermal conduction calorimetry. A statistical study was then conducted on the findings to determine the effect of each variable when the response signals were peak heat flow rate and the time needed to reach that peak. The statistical analysis identified the optimal experimental conditions to be a LSF of 90%, a CaSO4 content of 2.60%, and the absence of both ceramic waste and CaF2.
Versión del editorhttp://www.sciencedirect.com/science/article/pii/S0958946511001053
URIhttp://hdl.handle.net/10261/51582
ISSN0958-9465
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